Guide To Blend Modes

I've published a guide to blend modes for you guys to have a look at. You can find it in guides section of Stencylforge. It's not feature yet, but it will be hopefully. Feedback on content is important to me, so be sure to check it out and tell me what you thought!

java.lang.NullPointerException at stencyl.sw.app.App.forceForgeCenterToClose(App.java:1689) at stencyl.sw.app.App.forceForgeCenterToRefresh(App.java:1700) at stencyl.sw.actions.Actions.gameOpened(Actions.java:576) at stencyl.sw.app.tasks.OpenGameTask$3.run(OpenGameTask.java:166) at java.awt.event.InvocationEvent.dispatch(Unknown Source) at java.awt.EventQueue.dispatchEventImpl(Unknown Source) at java.awt.EventQueue.access$000(Unknown Source) at java.awt.EventQueue$1.run(Unknown Source) at java.awt.EventQueue$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source)java.lang.NullPointerException at stencyl.sw.app.App.forceForgeCenterToClose(App.java:1689) at stencyl.sw.app.App.forceForgeCenterToRefresh(App.java:1700) at stencyl.sw.actions.Actions.gameOpened(Actions.java:576) at stencyl.sw.app.tasks.OpenGameTask$3.run(OpenGameTask.java:166) at java.awt.event.InvocationEvent.dispatch(Unknown Source) at java.awt.EventQueue.dispatchEventImpl(Unknown Source) at java.awt.EventQueue.access$000(Unknown Source) at java.awt.EventQueue$1.run(Unknown Source) at java.awt.EventQueue$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source)

This what I get when I open the guide. There is no popup and resources as well.